The figure shows a planetarium’s viewing room, which is in the shape of a hemisphere.
the diameter of the hemisphere is 60 feet. what is the surface area of the curved viewing area of the planetarium? (use 3.14 for π. round the answer to the nearest tenth, if necessary. recall that the formula for the surface area of the curved part of a hemisphere is sa = 2πr2.)

720

step-by-step explanation:

first i did work 2nd i did work and 3rd i did work

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step-by-step explanation:

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step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?